Dies for making nails and pins out of wire



April 26, 1938. l. WERNER DIES FOR MAKING NAILS AND PINS OUT OF WIRE Filed Oct. 2'7, 1937 INVENTOR /G/VA 0 WfPA/EQ ATTORNEY Patented Apr. 26, 1938 UNITED STATES PATENT OFFICE Ignacy Werner, Buffalo, N. Y.

Application October 2'7, 1937, Serial No. 171,259

1 Claim.

This invention relates to dies for making nails and pins out of wire. It is particularly directed to a pair of multi-faced complementary, similar dies rotatable to bring different sets of grooves 5 into working position, as the grooves .wear out.

An object of this invention is to provide dies of the character described with means to protect the unused grooves while the dies are being operated, whereby better nails may be made with said 10 dies.

A further object of this invention is to provide dies of the character described, which will result in a substantial saving in tool steel, saws and grind stones necessary to make dies.

15 Another object of this invention is to provide dies of the character described, which may be made in many sizes, for manufacturing nails or pins of various sizes, either with or without heads.

Still another object of this invention is to provide strong, rugged and durable dies of the character described, which shall be relatively inexpensive to manufacture, economical in use, and yet practical and eflicient to a high degree.

Other objects of this invention will in part be 25 obvious and in part hereinafter pointed out.

The invention accordingly consists in the features of construction combinations of elements, and arrangement of parts which will be exemplified in the construction hereinafter described, and of which the scope of application will be indicated in the following claim.

In the accompanying drawing, in which is shown one of the various possible illustrative embodiments of this invention:

Figure 1 is a top plan view of a pair of complementary dies embodying the invention;

Figure 2 is a side, elevational view thereof;

Figure 3 is a top plan view similar to Figure 1, but showing five sided dies;

40 Figure 4 is a side elevational view of the dies shown in Figure 3; and

Figure 5 is a perspective View of one of the protective locking pins.

Referring now in detail to the drawing, I designates a pair of similar, cooperating, complementary dies ll and l2 made of tool steel and used for making nails or pins. As shown in Figures 1 and 2, dies ll, l2 are of regular octagonal transverse cross-section, each having eight sim- 50 ilar rectangular faces I4. Each die has parallel octagonal end surfaces l5.

Each of the eight smooth rectangular faces of each die is formed with a central, longitudinal groove 29, of semi-circular uniform cross-section 55 extending the length of the die.

The dies Ii, l2 may be mounted on a machine, with one pair of adjacent faces 14 in registering, opposed relation, or mutually contacting position. The registering, semi-cylindrical grooves together form a cylindrical hole for making nails or pins. 5 When one set of grooves wears out, the dies may be turned to bring the next set of complementary faces in superimposed position, and hence another set of grooves 20 into registering position. With such construction the dies may be used for 10 long periods, and one set of dies is in effect equivalent to eight sets of dies.

The octagonal dies shown in Figures 1 and 2 may be used for the manufacture of nails with small heads, headless pins, pins and all kinds of 15 common nails.

Means is provided to protect the surfaces of the grooves of the dies ll, l2. To this end, there is inserted into each of the semi-cylindrical grooves 20 with the exception of the registering 20 grooves, a lock pin 2! of similar semi-cylindrical shape fully fitting into said grooves.

After one set of registering grooves has worked out or worn out, the dies are turned around one face, to bring the next set of faces into contact and the next set of grooves 20 into registration. The pins iii are removed from the new set of complementary grooves and placed in the worn out grooves.

For making nails with larger heads, dies Ila, Ha shown in Figures 3 and 4 are used. These dies are similar to dies H, l2 except that they have five die faces.

Said dies are of regular polygonal cross-section, having rectangular faces, each formed with a central, longitudinal, semi-cylindrical groove, whereby a set of dies may be used in a plurality of relative positions. Each set of dies is thus in efiect a multiple die, and may be used for long periods without necessity for replacement, thus saving in tool steel, labor of grinding, sawing and drilling, reducing cost of grind stones and drills, and hence being economical to use, and practical and eflicient to a high degree.

A dominant feature of the invention is the provision of means insertable into the grooves 20 for protecting the same against injury, chipping or scratching.

It will thus be seen that there is provided a device in which the several objects of this invention are achieved, and which is well adapted to meet the conditions of practical use.

It is to be understood that all matter herein set forth or shown in the accompanying drawing 10 the grooves of one die being adapted to selective- 1y register with the grooves of the other die, as the dies are turned and diiferent pairs of faces are brought together, and lock pins frictionally fitted within all of said grooves except the pair of grooves of said dies which register, said grooves being of semi-circular cross-section, and said pins being of similar semi-circular cross-section and co-extensive in length with said grooves.

IGNACY WERNER. 

